EP1911228A2 - Etablissement de session avec qualite de service definie - Google Patents

Etablissement de session avec qualite de service definie

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Publication number
EP1911228A2
EP1911228A2 EP06779746A EP06779746A EP1911228A2 EP 1911228 A2 EP1911228 A2 EP 1911228A2 EP 06779746 A EP06779746 A EP 06779746A EP 06779746 A EP06779746 A EP 06779746A EP 1911228 A2 EP1911228 A2 EP 1911228A2
Authority
EP
European Patent Office
Prior art keywords
communication
virtual circuit
network
session
service
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06779746A
Other languages
German (de)
English (en)
Other versions
EP1911228A4 (fr
EP1911228B1 (fr
Inventor
Dany Sylvain
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microsoft Technology Licensing LLC
Original Assignee
Nortel Networks Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nortel Networks Ltd filed Critical Nortel Networks Ltd
Publication of EP1911228A2 publication Critical patent/EP1911228A2/fr
Publication of EP1911228A4 publication Critical patent/EP1911228A4/fr
Application granted granted Critical
Publication of EP1911228B1 publication Critical patent/EP1911228B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0892—Network architectures or network communication protocols for network security for authentication of entities by using authentication-authorization-accounting [AAA] servers or protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1023—Media gateways
    • H04L65/103—Media gateways in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/148—Migration or transfer of sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]

Definitions

  • the present invention relates to communications, and in particular to establishing authorized sessions having defined quality of service in mobile communication environments.
  • IP Internet Protocol
  • multimedia services such as data, speech, audio, video, and other media services
  • IP Internet Protocol
  • the mobile communications industry is in a transition phase from supporting only voice and short messaging services to supporting numerous multimedia services for different types of applications.
  • the traditional voice and short messaging services are being complemented by person-to-person and group applications.
  • These applications allow audio and video streaming, file sharing, multiplayer gaming experiences, and push-to-talk services, just to name a few of the many services to be supported.
  • These services may be combined in a dynamic fashion to further enhance the subscriber's experience.
  • IMS IP Multimedia Subsystem
  • SIP Session Initiation Protocol
  • IP-based communication services Multiple sessions may be established at any given time for a user, and associated as desired. Once sessions are authorized and established, the IMS architecture should provide a designated quality of service, depending on the type of session established, the user's subscription requirements, or other policies controlling the resources a subscriber should be afforded.
  • the quality of service mechanisms ensure that subscribers are provided with the resources to which they are entitled, while preventing subscribers from using more resources than needed or deserved.
  • the current IMS architecture only supports SIP-based applications. Non-SIP applications are not supported.
  • the present invention allows different types of communication applications to cooperate with an associated communication client to facilitate communications having a defined quality of service.
  • the communication client may establish a virtual circuit having a defined quality of service through a network using a first session establishment protocol on behalf of the communication application.
  • the communication application may establish one or more communication sessions, which may support different types of multimedia services, through the virtual circuit.
  • the virtual connection extends through the local access network, which may be supported by an IP multimedia subsystem (IMS).
  • IMS IP multimedia subsystem
  • the communication client may use the Session Initiation Protocol (SIP) as the first session establishment protocol to establish the virtual circuit through the local access network.
  • SIP Session Initiation Protocol
  • the local application can then use any type of session establishment protocol, SIP or otherwise, to establish the communication sessions through the virtual circuit to the appropriate endpoint, which may be another mobile terminal or application server.
  • the communication application and the communication client may cooperate with one another to obtain communication capabilities for the other endpoint as well as for the network through which the virtual circuit is established, and use this information to determine whether or not communications are appropriate.
  • the communication client may provide virtual circuit information, which is information sufficient to allow the communication sessions to be established through the virtual circuit, directly or indirectly through the communication client.
  • the multimedia sessions supported through the virtual circuit may represent different types of media, including audio, video, data, and voice. Different types of sessions may be established at any given time to facilitate an enhanced multimedia service with a defined quality of service level.
  • FIGURE 1 is a block representation of a communication environment according to one embodiment of the present invention.
  • FIGURES 2A and 2B show a communication flow diagram illustrating classic IMS operation.
  • FIGURES 3A and 3B show a communication flow diagram illustrating operation of the present invention according to one embodiment.
  • FIGURES 4A and 4B show a communication flow diagram illustrating operation of the present invention according to a second embodiment.
  • FIGURE 5 is a block representation of a communication environment according to a second embodiment of the present invention.
  • FIGURE 6 is a block representation of a mobile terminal according to one embodiment of the present invention.
  • FIGURE 7 is a block representation of an application server according to one embodiment of the present invention.
  • FIGURE 8 is a block representation of a visited service node according to one embodiment of the present invention.
  • FIGURE 9 is a block representation of a home service node according to one embodiment of the present invention.
  • the present invention allows multimedia services to be provided over disparate types of networks while providing an appropriate quality of service (QoS).
  • QoS quality of service
  • the multimedia sessions may be established between fixed or mobile devices, or between application servers that may provide content for a given multimedia session.
  • IMS IP multimedia subsystem
  • GSM Global System for Mobile Communications
  • EDGE Enhanced Data Rates for GSM Evolution
  • UTMS Universal Mobile Telecommunications System
  • CDMA Code Division Multiple Access
  • GSM Global System for Mobile Communications
  • EDGE Enhanced Data Rates for GSM Evolution
  • UTMS Universal Mobile Telecommunications System
  • CDMA Code Division Multiple Access
  • GSM Global System for Mobile Communications
  • EDGE Enhanced Data Rates for GSM Evolution
  • UTMS Universal Mobile Telecommunications System
  • DSL broadband access
  • cable fiber
  • the communication environment 10 illustrated in Figure 1 allows a mobile terminal 12, such as a mobile telephone, personal digital assistant (PDA), or personal computer, to communicate with any number of endpoints, such as another mobile terminal 12 or an application server 14 via a core packet network 16.
  • a mobile terminal 12 such as a mobile telephone, personal digital assistant (PDA), or personal computer
  • PDA personal digital assistant
  • core packet network 16 may be provided directly or indirectly via a home access network 18 or visited access network 20.
  • the home access network 18 is generally the access network associated with the primary location of the mobile terminal 12, and is the access network through which elements on visited access networks 20 will obtain subscriber and other related service information for the mobile terminal 12, as the mobile terminal 12 roams away from the home access network 18.
  • the mobile terminal 12 may use various types of cellular or local wireless communication techniques to access the home access network 18 or the visited access network 20.
  • a wireless or cellular access network 22 which is associated with one or more base stations 24, is used to gain access to the visited access network 20.
  • the base station 24 will connect to the visited access network 20 via a serving service node 26, which may be referred to as a 3GPP Serving GPRS (General Packet Radio Service) Support Node (SGSN) in an IMS architecture.
  • the serving service node 26 is the actual access point to the visited access network 20.
  • the visited access network 20 may connect directly or indirectly to the core packet network 16 via a gateway service node 28, which may be referred to as a Gateway GPRS Support Node (GGSN) in an IMS architecture.
  • GGSN Gateway GPRS Support Node
  • the gateway service node 28 may directly or indirectly through other networks provide access to service policy controllers (SPCs) 30 as well as visited service nodes 32, which may be referred to as call session control functions (CSCF) in a 3GPP IMS architecture.
  • SPCs service policy controllers
  • CSCF call session control functions
  • the home access network 18 is associated with a home service node 34, which may take the form of a serving-CSCF in a 3GPP IMS architecture.
  • the serving-CSCF performs session control services for the subscriber, and provides call intelligence and processing logic.
  • the VSN 32 and the HSN 34 may act as proxies, and will cooperate to aid in the setup and management of sessions and the forwarding of messages between IMS networks to facilitate the various multimedia sessions with the mobile terminal 12.
  • An authentication controller 36 may take the form of a home subscriber service (HSS) in a 3GPP IMS network.
  • HSS home subscriber service
  • the authentication controller 36 generally contains most of the key subscriber data associated with the mobile terminal 12 and enables the various mobile terminals 12 and other entities, including the application servers 14, to find and communicate with other entities. Accordingly, authentication of subscribers and their relative service requests must be authenticated or authorized via the authentication controller 36.
  • the mobile terminal 12 will generally include a communication client 38 to facilitate multimedia sessions within the IMS architecture using the Session Initiation Protocol (SIP).
  • SIP Session Initiation Protocol
  • Applications 40 running on the mobile terminal 12 will need to cooperate with the communication client 38 to facilitate communications.
  • any type of application 40 even those that are not SIP-based, will be able to engage in multimedia sessions through the communication client 38, and those sessions will be supported by a defined quality of service.
  • a communication flow illustrating establishment of a traditional IMS multimedia session is provided prior to providing communication flows for creating such sessions using the techniques of the present invention.
  • Figures 2A and 2B a simplified communication flow is illustrated according to classic IMS operation. Initially, the communication client 38 residing in the mobile terminal 12 will attempt to initiate a communication session with another endpoint, such as the application server 14. As such, the communication client 38 will send an Invite message to the VSN 32 (step 100).
  • the Invite message may indicate that the Invite is from the mobile terminal 12 having a certain identification, such as a subscriber identification module (SIM) identifier (ID), and is intended for the particular application server 14.
  • the Invite message may also include Session Description Protocol (SDP) information, which may include address and port information for communications with the communication client 38 as well as any other communication clients, such as the bandwidth (100 kbps) and maximum latency (50 msec) required for the session.
  • SDP Session Description Protocol
  • the VSN 32 will forward the Invite message to the HSN 34 (step 102), which will interact with the authentication controller 36 to authenticate the subscriber and the requested session.
  • the HSN 34 may send an Authenticate request including the authentication information for the mobile terminal 12 to the authentication controller 36 (step 104).
  • the authentication controller 36 may look up the subscriber's service profile, and either provide the profile to the HSN 34 or provide authorization based on the profile (step 106).
  • the service profile information allows either the authentication controller 36 or the HSN 34 to identify services that need to be executed, determine the order in which multiple services are executed, determine the addresses of application servers 14 or other endpoints that should execute the requested services, and inform the application servers 14 of the order in which services should be executed in the case that multiple services need to be executed on the same application server 14.
  • the HSN 34 will forward the Invite message to the appropriate application server 14 (step 108), which will begin processing the request and send a 200 OK message back to the HSN 34 in traditional fashion (step 110).
  • the HSN 34 will forward the 200 OK message to the VSN 32 (step 112), which will take the necessary steps to reserve or otherwise allocate resources for the communication session with the base station 24 facilitating communications with the mobile terminal 12, the serving service node 26, and the gateway service node 28.
  • a Resource Request is sent to the session policy controller 30 (step 114).
  • the Resource Request may identify the information required to communicate with the communication client 38 (CLIENT_IP_ADDRESS) as well as the identity of the serving service node 26 and the session description protocol (SDP) information pertaining to the actual resources required for the service. These resources dictate the resultant quality of service.
  • the SPC 30 will then send a Resource message, perhaps using a Common Open Policy Service (COPS) message, to the base station 24, serving service node 26, and gateway service node 28 (steps 116, 118, and 120) to reserve these resources for the particular communication session.
  • the SPC 30 will then send a 200 OK message to the VSN 32 in response to the Resource Request (step 122).
  • the VSN 32 will send a 200 OK message to the communication client 38 in response to the original Invite message (step 124).
  • Bandwidth has now been reserved in at least three different sections of the communication path between the communication client 38 and the application server 14.
  • Bandwidth has been reserved between the communication client 38 or the mobile terminal 12 and the base station 24 (step 126); between the base station 24 and the serving service node 26 (step 128); and between the serving service node 26 and the gateway service node 28 (step 130).
  • a general IP connection is provided between the gateway service node 28 and the application server 14 via the core packet network 16 (step 132).
  • SIP-based applications are able to use this IMS architecture, because the communication clients 38 that are capable of working with an IMS architecture generally only support SIP communications, and have limited ability to interact with applications 40. These applications 40 are limited to SIP-based applications.
  • the present invention allows non-SIP applications 40 to cooperate with the communication client 38 to establish communication sessions that are authorized and provided a defined QoS.
  • the present invention uses elements associated with the visited (or home) access network 20 to establish authorized virtual connections, such as tunnels, between the mobile terminal 12 and the gateway service node 28 through the visited (or home) access network 20.
  • the authorized virtual connections will be afforded sufficient QoS parameters to support the desired multimedia service or services over the visited (or home) access network 20.
  • the local applications 40 SIP-based or otherwise, will establish communication sessions through the virtual connections to take advantage of the QoS afforded to the virtual connections.
  • the IMS components are used to establish the virtual connections through the local access network or beyond. These virtual connections may be established using SIP messaging, as will be described below.
  • a first embodiment is illustrated in association with the communication flow of Figures 3A and 3B.
  • the local application 40 which is not SIP-based, will negotiate with the communication client 38 to have the communication client 38 establish a virtual connection to the gateway service node 28.
  • the virtual connection will be afforded sufficient QoS parameters to support the desired multimedia service or services.
  • the QoS parameters may include bandwidth, jitter, latency, or other pertinent QoS indicia.
  • the local application 40 may send a query to the appropriate application server 14 (or other endpoints with which services are requested) to obtain the capabilities of the application supported by the application server 14 (step 200).
  • the application server 14 will respond with the application capabilities (step 202).
  • the local application 40 will then send a query to the communication client 38 to obtain the capabilities of the appropriate access network, which is the visited access network 20 in this example (step 204).
  • the communication client 38 will then query the base station 24 (or other appropriate access point) for appropriate communication capabilities (step 206).
  • the base station 24 will obtain the information bearing on the appropriate capabilities, and provide such information back to the communication client 38 (step 208).
  • the capabilities information is then forwarded to the local application 40 (step 210).
  • the communication capabilities associated with the visited access network 20 indicate that there is sufficient bandwidth to support a 200 kbps data rate, with a maximum of 40 msec delay and a 1 E-4 bit error rate (BER).
  • the local application 40 will determine if the various capabilities are sufficient to support the requirements of the multimedia session. In this case, assume the multimedia session requires a bandwidth of 100 kbps and a maximum delay of 50 msec. In this case, the capabilities of the visited access network 20 are sufficient to meet those required by the local application 40.
  • the local application 40 will send a connection request to the communication client 38 to cause the communication client 38 to establish an authorized virtual connection with the gateway service node 28 (step 212).
  • the communication client 38 will send an Invite message to the VSN 32 (step 214).
  • the Invite message will include the identification (SIM ID) of the mobile terminal 12 from which the Invite message originated, and indicate that the Invite is intended to establish a session with the application server 14.
  • the Invite message may further identify the IP address of the communication client 38 as well as session description protocol information identifying the communication requirements for the multimedia session.
  • the VSN 32 will forward the Invite message to the HSN 34 (step 216), which will interact with the authentication controller 36 to obtain authorization or determine whether the request is authorized (steps 218 and 220).
  • the HSN 34 will then forward a 200 OK message to the VSN 32 in response to the Invite message of step 216 (step 222).
  • the VSN 32 will then send a Resource Request message to the SPC 30 to reserve sufficient resources for the virtual connection (step 224).
  • the Resource Request message will identify the mobile terminal 12 using the client IP address, identify the entry point to the visited access network 20, and provide the requisite session description protocol parameters.
  • the Resource Request message may be a COPS request.
  • the SPC 30 will send a Resource message, which may be a COPS message, to each of the base station 24, serving service node 26, and gateway service node 28 to reserve sufficient resources for the virtual connection between each of these three entities (steps 226, 228, and 230).
  • the SPC 30 will then send an OK message back to the VSN 32 (step 232), which will forward a 200 OK message in response to the Invite message of step 214 to the communication client 38 (step 234).
  • the communication client 38 will then provide the requisite virtual connection information, which may be binding reference information identifying address, port, and other information necessary for communicating over the virtual connection to the gateway service node 28 in an OK message sent to the local application 40 in response to the connection request of step 212 (step 236).
  • a virtual connection with a defined quality of service is established between the mobile terminal 12 and the gateway service node 28 (step 244).
  • IP connectivity between the gateway service node 28 and the application server 14 is provided in traditional fashion (step 246), and may not be associated with a certain amount of reserved bandwidth, since the core packet network 16 supporting such IP connectivity will generally be engineered to have sufficient capacity.
  • another tunnel may be established between the gateway service node 28 and the application service node 14, with or without defined QoS parameters.
  • the application server 14 initiates a session with the mobile terminal 12, and in particular with an application 40 that is not a SIP-based application.
  • the application server 14 will send a message including the application server's capabilities to the application 40 of the mobile terminal 12 (step 300).
  • the application 40 will send a query to the communication client 38 to obtain the visited access network's capabilities (step 302).
  • the communication client 38 will then send a query to the base station 24 to obtain the network capabilities (step 304).
  • the base station 24 will provide its capabilities for a communication session to the communication client 38 (step 306), which will forward these capabilities to the application 40 (step 308).
  • the application 40 may send a Service Request to the application server 14 to request a particular service having particular QoS parameters (step 310).
  • the Service Request is for establishing a session for a multiplayer Doom gaming session, which requires 100 kbps bandwidth.
  • the Service Request will include the identification for the mobile terminal 12 (SIM ID) as well as the addresses for the VSN 32 and the HSN 34, which represent either end of the visited access network 20.
  • the application server 14 will then initiate an Invite message intended for the mobile terminal 12 (SIM ID).
  • the Invite message may include the communication client's IP address, as well as session description protocol parameters providing the required bandwidth of 100 kbps for the requested Doom session. Since the HSN 34 is acting as a proxy, the Invite message will be received by the HSN 34 (step 312), which will take the necessary steps to authenticate the requested session by interacting with the authentication controller 36 (steps 314 and 316).
  • the HSN 34 will then forward the Invite message to the VSN 32 associated with the visited access network 20 (step 318).
  • the VSN 32 will in turn forward the Invite message to the communication client 38 (step 320), as well as send a Resource Request to the SPC 30 (step 322).
  • the Resource Request will cause the SPC 30 to send Resource messages to reserve sufficient bandwidth to support a 100 kbps data rate through the base station 24, serving service node 26, and gateway service node 28. As such, Resource messages are sent to each of these entities (steps 324, 326, and 328). The SPC 30 will then send an OK message in response to the Resource Request after sending out the Resource messages to the routing entities associated with the visited access network 20 (step 330).
  • the communication client 38 will send a 200 OK message in response to the Invite message of step 320 to the VSN 32 (step 332).
  • the 200 OK message may include virtual circuit information (VCI) to facilitate communications over the virtual circuit once it is established between the mobile terminal 12 and the gateway service node 28.
  • VCI virtual circuit information
  • the VSN 32 will then send a 200 OK message including the virtual circuit information to the HSN 34 (step 334), which will forward the 200 OK message with the virtual circuit information to the application server 14 (step 336).
  • the application server 14 is ready to respond to the application's Service Request of step 310.
  • the application server 14 will send a Service Request Response including the virtual circuit information to the application 40, which is running on the mobile terminal 12 (step 338).
  • reserved bandwidth is established between the application 40 of the mobile terminal 12 and the base station 24 (step 340), between the base station 24 and the serving service node 26 (step 342), and between the serving service node 26 and the gateway service node 28 (step 344) to support the virtual circuit (step 346).
  • the virtual circuit information provided in the Service Request Response is used by the application 40 to use the virtual circuit (step 346) to support the requested multimedia session.
  • IP connectivity between the gateway service node 28 and the application server 14 may be established without reserved bandwidth (step 348). Those skilled in the art will recognize that reserved paths may be established in alternative fashions. [0036] Turning now to Figure 5, the mobile communication environment 10 may take many forms, and may support various types of access networks.
  • a wireline access network 42 may be used to support local wireless communications over a local wireless network.
  • a local wireless base station or access point (AP) 44 may be used to support local wireless communications with the mobile terminal 12. These local wireless communications may be those used in wireless local area networks, implementing 802.11 or Bluetooth communication technologies.
  • the local wireless base station or access point 44 is coupled to a serving service node 46, which provides a point of entry to the wireline access network 42.
  • a gateway service node 48 may be provided to facilitate direct or indirect communications with the core packet network 16.
  • An SPC 50 and a VSN 52 may be provided, and will operate in a fashion similar to the corresponding elements described above.
  • FIG. 6 a block representation of a mobile terminal 12 is illustrated as an exemplary endpoint.
  • the mobile terminal 12 will generally include a control system 54 having memory 56 with the requisite software 58 and data 60 to operate as described above.
  • the control system 54 will be associated with a user interface 62 to facilitate input and output functions associated with a user, as well as a communication interface 64 to facilitate communications with the visited access network 20 and home access network 18 via appropriate access points.
  • the communication interface 64 will generally be a wireless communication interface supporting cellular or local wireless communication techniques such as those used in wireless local area networks. However, the communication interface 64 may support a physical wired connection with the access points.
  • Figure 7 is a block representation of an application server 14 as another exemplary endpoint according to one embodiment of the present invention.
  • the application server 14 may include a control system 66 associated with memory 68 with the requisite software 70 and data 72 to operate as described above.
  • the control system 66 will also be associated with a network interface 74 to facilitate communications via the core network 16 in a direct or indirect fashion.
  • Figure 8 is a block representation of a visited service node 32 according to one embodiment of the present invention.
  • the visited service node 32 may include a control system 76 associated with memory 78 with the requisite software 80 and data 82 to operate as described above.
  • the control system 76 will also be associated with a network interface 84 to facilitate communications.
  • FIG. 9 is a block representation of a home service node 34 according to one embodiment of the present invention.
  • the home service node 34 may include a control system 86 associated with memory 88 with the requisite software 90 and data 92 to operate as described above.
  • the control system 86 will also be associated with a network interface 94 to facilitate communications.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • General Business, Economics & Management (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention permet à différents types d'application de communication de coopérer avec un client de communication associé afin de faciliter des communications possédant une qualité de service défini. Ce client de communication peut établir un circuit virtuel autorisé possédant une qualité de service défini à travers un réseau en utilisant un premier protocole d'établissement de session au titre de cette application de communication. Lorsque le circuit virtuel autorisé est établi, l'application de communication peut établir une ou plusieurs sessions de communication, lesquelles peuvent prendre en charge différent types de service multimédia, via cette connexion virtuelle. Dans un mode de réalisation de l'invention, la connexion virtuelle s'étend à travers le réseau d'accès local qui peut être pris en charge par un sous système multimédia IP (IMS). Le client de communication peut utiliser le protocole d'initiation de session (SIP) comme premier protocole d'établissement de session pour établir le circuit virtuel à travers le réseau d'accès local.
EP06779746.4A 2005-06-22 2006-06-21 Etablissement de session avec qualite de service definie Not-in-force EP1911228B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/159,033 US9401934B2 (en) 2005-06-22 2005-06-22 Establishing sessions with defined quality of service
PCT/IB2006/001689 WO2006136926A2 (fr) 2005-06-22 2006-06-21 Etablissement de session avec qualite de service definie

Publications (3)

Publication Number Publication Date
EP1911228A2 true EP1911228A2 (fr) 2008-04-16
EP1911228A4 EP1911228A4 (fr) 2011-03-23
EP1911228B1 EP1911228B1 (fr) 2016-04-13

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EP06779746.4A Not-in-force EP1911228B1 (fr) 2005-06-22 2006-06-21 Etablissement de session avec qualite de service definie

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WO2006136926A2 (fr) 2006-12-28
US9401934B2 (en) 2016-07-26
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WO2006136926A3 (fr) 2008-07-17
US20070002832A1 (en) 2007-01-04

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